Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261534AbVETTpq (ORCPT ); Fri, 20 May 2005 15:45:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261559AbVETTpq (ORCPT ); Fri, 20 May 2005 15:45:46 -0400 Received: from turing-police.cirt.vt.edu ([128.173.54.129]:22797 "EHLO turing-police.cirt.vt.edu") by vger.kernel.org with ESMTP id S261534AbVETTpi (ORCPT ); Fri, 20 May 2005 15:45:38 -0400 Message-Id: <200505201945.j4KJjSAW014218@turing-police.cc.vt.edu> X-Mailer: exmh version 2.7.2 01/07/2005 with nmh-1.1-RC3 To: Geert Uytterhoeven Cc: "Richard B. Johnson" , Jan-Benedict Glaw , Linux kernel Subject: Re: Screen regen buffer at 0x00b8000 In-Reply-To: Your message of "Fri, 20 May 2005 21:26:59 +0200." From: Valdis.Kletnieks@vt.edu References: <20050520141434.GZ2417@lug-owl.de> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_1116618328_13523P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Date: Fri, 20 May 2005 15:45:28 -0400 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1390 Lines: 38 --==_Exmh_1116618328_13523P Content-Type: text/plain; charset=us-ascii On Fri, 20 May 2005 21:26:59 +0200, Geert Uytterhoeven said: > On Fri, 20 May 2005, Richard B. Johnson wrote: > > I think that I've discovered a bug. I know that what I have written gets > > to the screen buffer because I can read in back! This doesn't make > > any sense. > > Even if it's only in the CPU cache, of course you can read it back (using the > CPU, not DMA ;-). No, the bug is in Richard's assuming that because he can read it back in means that it's in the screen buffer. In fact, it only means he wrote it into some memory location that he can read back in. ;) Now if he added a description that verified that a read *from the screen buffer* (rather than "from where he wrote") shows his changes, *then* he'd have something... --==_Exmh_1116618328_13523P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) Comment: Exmh version 2.5 07/13/2001 iD8DBQFCjj5XcC3lWbTT17ARAtyPAKDRIQy00wXtaVrO32L1Smh+WF3IjgCgl1Dw 1eKn6XgxTnr+s5UojbExC0A= =JYhi -----END PGP SIGNATURE----- --==_Exmh_1116618328_13523P-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/